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Question
Let A = {a, b, c, d} and f : A → A be given by f = {( a,b ),( b , d ),( c , a ) , ( d , c )} write `f^-1`. [NCERT EXEMPLAR]
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Solution
We have ,
A = {a, b, c, d} and f : A
→ A be given by f = {(a, b), (b, d), (c, a), (d, c)}
Since, the elements of a function when interchanged gives inverse function.
so, f -1 = {(b, a), (d, b), (a, c), (c, d)}
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